LED (light emitting diode) A19 dusk to dawn light bulb. Turns on at dusk, off at dawn. Direct replacement for 60-watt incandescent bulb, uses only 8 watts. Ideal for indoor and outdoor residential and commercial lighting. Automatic operation, there are no timers to set, no apps to download. The internal sensor works in any direction. 2700 kelvin warm white color. Not compatible with external photo sensors, motion sensors or timers.